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X pipe help
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11-04-2011, 07:10 PM
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BTM
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Drives: A///MERICAN!!!
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2007 BMW Z4 M Coupe
[7.20]
I replaced the xpipe and mufflers at the same time, so can't comment. Also, my secondary cats are gutted which on the stock exhaust increased volume noticeably...so I can't really comment even if I were to put my stock stuff back on
Appreciate
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